Azure Search API does not find indexed document despite correct query

Question

Using Azure Search REST API v2016-09-01, the following query find the expected document:

?queryType=full&search=id:3119443 AND name:du*

{
  "value": [
    {
      "@search.score": 4.425995,
      "id": "3119443",
      "name": "dupond"
    }
  ]
}

Whereas the following broader query (searching d* instead of du*) does not find the same document:

?queryType=full&search=id:3119443 AND name:d*

{
  "value": []
}

The name field uses a custom analyzer with the Whitespace tokenizer and the WordDelimiterTokenFilter, AsciiFoldingTokenFilter and Lowercase token filters.

Most of the indexed documents are correctly found when searching their first name letter.
The issue is 100% reproducible on those specific documents, for which I don't find anything special.
The Search Service is a "Standard" tier (1 replica, 1 partition, 1 search unit), with the index containing 3,000,000+ documents.

Thank you.

Hi, I am Nate from Azure Search. This appears to be a bug. We are looking into the issue. Feel free to contact me at [email protected] if you have any questions. — Nate Ko
This is a regression introduced in a recent change. The change introduce a cap on how many terms a wildcard search query can expand to and affects queries that are widely scoped such a* or /.*/. We are treating this as a bug and are actively working on a fix. — Nate Ko

Nate Ko Nate Ko · Accepted Answer · 2017-01-30T19:36:37

Thanks for reporting the issue. As commented, this is a regression introduced in a recent change. The bug has been fixed. Thanks.

Azure Search API does not find indexed document despite correct query

1 Answers